[jira] [Created] (FLINK-28125) Promote leadership changing logs to INFO level

["Xintong Song (Jira)" <ji...@apache.org>]

Xintong Song created FLINK-28125:
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             Summary: Promote leadership changing logs to INFO level
                 Key: FLINK-28125
                 URL: https://issues.apache.org/jira/browse/FLINK-28125
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Coordination
            Reporter: Xintong Song


Currently, {{DefaultLeaderElectionService}} logs leadership changing events in DEBUG level, expecting the contender to log the changes in INFO level. This is fragile because there're many different {{LeaderContender}} implementations and not all of them print the logs properly. E.g., {{JobMasterServiceLeadershipRunner}} logs the leadership changes in TRACE level.

I'd suggest to revisit the logging of leadership changing, printing the INFO logs from {{LeaderElectionService}}. That probably also means removing the contender side logs to avoid redundancy.



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